# Coherent Stock: Tempting Buy With Big Caveat

> Coherent's optical growth attracts investors but one factor makes it risky.
- Title: Coherent Stock: Tempting Buy With Big Caveat · Seekingalpha
- Summary: Coherent's optical growth attracts investors but one factor makes it risky. Coherent Corp's optical photonics growth is attractive but inventory buildup…
- Keywords: coherent, optical photonics, datacenter, 800g transceivers, cash flow, stock analysis, money, business, Stock, Tempting, Buy, Big
- Source: Seekingalpha — https://seekingalpha.com/article/4953599-coherent-a-tempting-buy-but-theres-one-big-reason-to-stay-away
- Author: Hunting Alphas
- Published: 2026-10-12T20:45:43+00:00
- Read time: 1 min
- Topics: coherent, optical photonics, datacenter, 800g transceivers, cash flow, stock analysis, money, business
## Coherent's growth drivers
Coherent Corp sees robust datacenter-driven growth from surging demand for 800G/1.6T optical transceivers.
## PhotonLink expansion
PhotonLink expands COHR's 2030 addressable market by 50% positioning it as key integrated optics provider for hyperscalers.
## Margin pressures
Higher module assemblies pressure gross margins but improved yields and lower costs from 6-inch indium phosphide wafers offset sales mix.
## Cash flow concerns
Inventory accumulation and manufacturing expansion weaken cash flow conversion a major issue for bullish stock views.
## Key takeaway

Coherent Corp's optical photonics growth is attractive but inventory buildup weakens cash flow for investors.